people who suffer discrimination or otherwise organize to fight it learn about patterns and dog-whistles that are useful heuristics to recognize bigotry. I respect, value, appreciate, support, and take part in the struggle for social justice.
I understand the value of heuristics, but they're imperfect, and can lead to mistakes that end up promoting injustice. time and again, I've seen nuance such as standing for human rights of horrible human beings, and debating of scientifically relevant taboos, be mistaken for bigotry.
attempting to walk the fine line in which hate speech is ruled out but nuance and scientific debate can take place is quite a challenge, and people pressed for time in a culture of thoughts that can be expressed in 140 characters seem IMHO too ready to shoot when heuristics triggers. that is IMHO not a good trend for nuanced debate, for science, nor for social justice.